Controlling mechanism for window-regulators



L. T. BULLEY.

CONTROLLlNG MECHANISM FOR WINDOW REGULATORS.

APPLICATION FILED ocT.13. |919.

1,338,485. l .j Patented Apr. 27, 1926.

UNrrED sTAriisv PATENT OFFICE.

LOUIS T. BULLEY, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO C. COWLES & COMPANY,

0F NEW HAVEN, CONNECTICUT, A CORPORATION 0F CONNECTICUT.

Specification of Letters Patent.

Patented Apr. 27, 1920.

Application filed October 13, 1919. Serial No. 330,373.

To all I/'zom t may Concern.'

Be it known that I, LoUIs T. BULLEY, a citizen of the United States, residing at New Haven, county of Newllaven, State of Connecticut, have invented an Improvement in Controlling Mechanism for Window-Legulators, ot which the following is a specification.

This invention relates to the class ot' window regulators illustrated and described in Letters Patent No. 1,215,189, granted to me November (3, 1917, in whichv the window is raised and lowered by an operating shaft and is automatically locked in any position in which it may be left by rotation of the shaft, and the present invention has for its object to provide controlling mechanism especially adapted foruse with this class of regulators in which the construction is simplified, is light,l durable and noiseless, and in which the cost is reduced to the minimum as the parts may be pressed out from sheet metal. A i r With these and other objects in view I have devised the novel window regulator controlling mechanism which I will now describe, referring to the accompanying drawing forming a part of this specitication and using reference characters to indicate the several parts.

Figure 1 is a front elevation showing Imy novel controlling mechanism mounted' on a carrying plate;

Fig. 2 a rear elevation corresponding therewith;

Fig. 3 a section, on an enlarged scale,.on the line 3-23 in Fig. 1,.looking in the direction of the arrows;

Fig. 1 a section on the line 4-11 in Fig. 3, looking in the direction ot' the arrows;

Fig. 5 a similar view, showing a position ot' the parts after the operating shaft has nearly completed a clockwise rotation, and

Fig. 6 is a rear elevation with the retaining plate removed, the point of view being at line 6 6 inFig. 3, looking in the direction of the arrows.

10 denotes the operating shaft which is provided with a handle 11 and is mounted to rotate in a hub 15 which in turn is mount ed to rotate in a hole in carrying plate 16. 17 denotes a ratchet which is secured to carrying plate 16 'by rivets 12. 14 denotes a sprocket wheel and 18 a disk which charries pawls 19 having backwardly extending lugs 2() which pass through a cutaway portion of disk 18, indicated by 21, and are adapted to engage the teeth of the ratchet. Hub 15, sprocket wheel 11, and disk 18 are connected together by rivets 13 and are adapted to oscillate on the shaft as a unit. 22 denotes a longitudinally movable pawl tripping plate having a relatively large central opening 23, through which the shaft passes. and 2+, pins extending from the disk which engage radial slots 25 in the tripping plate and connect the tripping plate with the disk and limit the longitudinal movement of said plate. At right angles to slots 25 are enlargements of opening 23 to provide shoulders 2G which are adapted to be engaged by the ends of a cross pin 27 in the shaft. Pawls 1S) are pivoted to the disk at approximately their midlength and the tail of each pawl is engaged by one arm of a spring 28. 'lhese springsare coiled at their midlength about pins 29 extending from the disk, the other arms ot' said springs bearing against pins 3() on the tripping plate. The function o1 these springs is to normally move the tripping plate out of operative positon. that is backward away trom the pawls. and to throw the pawls into engagement with the teeth ot' the ratchet. The parts on the front of the carrying plate are inclosed in a casing 31 which is secured to the carrying plate. 32 denotes a cover plate at the back which is secured to the carrying plate by a screw passing through spacing plates 33, 34 and 35.

36 denotes the chain, one end of which is secured to the window, not shown, the other end being attached to a spring controlled drum. indicated by dotted lines in Fig. 2. The chain is adapted to be wound on the drum, and from the drum passes upward over the sprocket wheel and then downward through a guide 3T to the window. The portion ot' the chain passing over the sprocket wheel is retained in place by means of a curved plate 38 which forms a guide for the chain before it passes into guide 37.

Supposing the window to be lowered, to raise it the handle would be rotated` in the clockwise direction. The normal position of the parts would be substantially as shown in Fig. l. although it is not essential that the disk and tripping plate be in the exact position shown, said vparts would, however, be locked through the engagement of the pawls with a tooth of the ratchet. which is fixed. The first effect of rotation of the shaft is to cause the left end of the cross pin, as seen in Fig. 4, to engage one of the shoulders 2G -and raise the tripping plate, which lifts the pawls` and throws them out of engagement with the ratchet. -The tripping plate and pawls will remain in the position relatively to each other that is shown in Fig. 5 so long as rotation of the shaft continues. In Fig. 5 the shaft and parts carried thereby have made nearly a full rotation from the position shown in Fig. 4, During the raising movement of the window the chain will be wound on the drum and the controlling spring for the drum will be unwound. The instant the operator releases the shaft, springs 28 will act to move the tripping plate from the relative position shown in Fig. 5 to that shown in Fig. 4 and will cause the pawls to engage opposite sides of a tooth of the ratchet. thus lockilig the window, in any position in which it may be left, so that it cannot be moved in either direction except by rotation of the shaft. It will of course be understood that the drum controlling spring was wound by the previous lowering of the window. In practice this spring is so adjusted as to provide ,an effective counter-balance for the window.

If the window was left in a partly raised position and it is desired to raise it more or to entirely close it, the operation would be as before.

Should it be required to lower the window rfrom either a wholly closed or a partly closed position, the shaft would be rotated in the counter-clockwise direction and the lifting of the tripping plate to disengage the pawls from the ratchet tooth with which they were engaged would be effected by the right end of the cross pin, as seen in Fig. 4, instead of `by the left end as before. So far as the present invention is concerned. the op eration is practically the same in raising or lowering the window. The shaft is turned in one direction to raise it and in the other direction to lower it. The drum controlling spring is wound by the lowering of the window and effectively counter-balances it so that but little force is required to raise it. When the window is being lowered the chain will of course pass downward in the guide which prevents it from buckling.

Having thus described my invention` l claim l. A mechanism of thc character described comprising a rotatable shaft. a sprocket wheel and a disk fixed to each other and oscillatable on the shaft, a fixed ratchet, pawls carried by the disk and adapted to engage the ratchet, a pawl tripping plate, springs acting to move the tripping plate out of op erative position and to cause the pa-wls to engage the ratchet, and a cross pin in the shaft by which the tripping .plate is actuated when the shaft is turned in either direction.

2. A mechanism of the character described comprising a rotatable shaft, a sprocket wheel and a disk fixed to each other and oscillatable on the shaft, a fixed ratchet, pawls carried by the disk and adapted to engage the ratchet, a spring controlled pawl tripping plate and an operating co nection between the shaft and the tripping plate.

3. A mechanism of the character described comprising an operating shaft, a sprocket wheel loosely mounted thereon, a fixed ratchet, a disk connected to the sprocket wheel and rotating therewith, pawls carried by the disk and engaging the ratchet, a' longitudinally movable tripping plate having an opening through which the shaft passes and shoulders, a cross pin in the shaft adapted to engage either shoulder and springs secured to the disk and acting to throw the tripping plate out of operative position and the pawls into engagement with the ratchet.

4. A mechanism of the character described comprising an operating shaft having a cross pin, a sprocket wheel loosely mounted on the shaft, a fixed ratchet, a disk loose on the shaft v and connected to the sprocket wheel,pawls carried by the disk and ladapted to engage the ratchet, a 4tripping plate having shoulders adapted to bevengaged by the cross pin, and springs acting to throw the tripping plate out of operative position and the pawls into engagement with the ratchet.

5. A mechanism of the character described comprising an operating shaft, a sprocket wheel loosely mounted thereon, a fixed ratchet, a disk 'loose on the shaft but connected to the sprocket Wheel, pawls carried by the disk and adapted to engage the ratchet, a tripping plate having an opening through which the shaft passes, springs acting on the tripping plate and on the pawls, and an operating connection between the shaft and the tripping plate, whereby rotation of the shaft will cause the tripping plate to disengage the pawls from the ratchet.

6. A mechanism of the character described comprising an operating shaft, a sprocket wheel loosely mounted theron, a fixed ratchet, a disk loose on the shaft and connected to the sprocket wheel, pawls carried by the disk and engaging the ratchet, a spring controlled tripping plate, and an operating connection between said shaft and' said plate whereby rotation of the shaft will actuate said plate against the power of the springs.

7. A mechanism of the character described comprising an operating shaft, a sprocket wheel loosely mounted thereon, a fixed ratchet, a disk having pins, said disk being loose on the shaft and connected to the sprocket wheel, pawls carried by the disk and engaging the ratchet, a longitudinally movable tripping plate having-radial slots engaged by the pins and. an opening having shoulders, springs acting on the tripping plate and the pawls, and-a cross pin in the shaft adapted to engage either shoulder, rotation of the shaft imparting longitudinal movement to the tripping plate and rotary movement to said plate, the disk and the sprocket wheel.

8. A mechanism of t-hecharacter described comprising an operating'shaft, a sprocket wheel loosely mounted thereon, a fixed ratchet, a disk having pins, said disk being loose on the shaft and connected to the sprocket wheel, pawls carried by the disk and engaging the ratchet, a' longitudinally movable tripping plate having radial slots ei gaged by the pins, springs acting on the ti ipping plate and the pawls and an operating connection between the shaft and the tripping plate.

9. A mechanism of the character described comprising an operating shaft, a sprocket wheel loose thereon, ar fixed ratchet, a disk loose on the shaft and having a cutaway, pawls carried by the disk'and having lugs which pass through the cutaway and engage the ratchet, a tripping plate, springs acting on the tripping plate and the pawls, land an operating connection between the shaft and the tripping plate.

10. A mechanism of the 'character described comprising an operating shaft, a sprocket wheel loose thereon, a fixed ratchet, a disk loose on the shaft and connected to the sprocket wheel, pawls pivoted to the disk and and engaging the ratchet, a spring controlled tripping plate and-an operating connection between the shaft and the tripping plate.

1l. A mechanism of the character described comprising an operating shaft, a sprocket wheel loosely mounted thereon, a longitudinal movable tripping'plate, a connection between the shaft vand the tripping plate whereby the latter is rotated, and means for locking the sprocket wheel against rotation in either direction, rotation of the shaft causing the tripping plate to release the locking means.

l2. Al mechanism of the character described comprising an operating shaft, a sprocket wheel loosely mounted thereon, a

fixed ratchet, a disk loose on the shaft and l whereby the latter is moved longitudinally A and is caused to rotate on the shaft, and a connection between the tripping plate and the disk.

14. A mechanism of the character described comprising an operatingy shaft, a

sprocket wheel loosely mounted thereon, a-

ratchet, a disk loose on the shaft, pawls carried by the disk and engaging thel ratchet, a tripping plate having a pin and slot connection with the disk, and an operating connection between the shaft and the tripping plate, whereby the pawls are disengaged when the shaft .is rotated in either direction.

15. A mechanism of the character described comprising a carrying plate, a hub mounted to rotate therein, a shaft mounted to rotate the hub, a ratchet fixed to ,the carrying plate, a disk, a sprocket wheel, said sprocket'wheel, hub and disk being connected together and rotating as a unit, pawls carried by the disk and engaging the ratchet, a spring controlled tripping plate, and an operating connection between the shaft and the tripping plate.

In testimony whereof I aHiX my signature.

Louis T. BULLEY. 

